Development and Qualification of IMMβ and Z4J+, Radiation Hard III-V Solar cells

Solaero has begun AIAA-S111 qualification of its new, radiation-hard, solar cells: the 33.3% IMMβ (AM0 1353 W/m2) and 31.3% Z4J+ (AM0 1353 W/m2). These solar cells are designed targeting ideal performance in real operating environments including charged particle irradiation and elevated temperatures. This presentation outlines the performance of the cells, the advancements in material quality and device design, as well as unique features, such as the reduction in solar absorptance of IMMβ.